A person who "lumps" you into their email distribution lists when sending jokes and other viral email messages. In most cases you barely know the person who sends you the email or they are just a friend of a friend of a friend.

Lumpers are poeple who "lump" you into their distribution list when sending jokes and other viral email.

Term used to describe anyone whose job it is to manually handle freight in a warehouse. This job usually entails use of powered equipment, but specifically refers to what drivers call 'finger freight' freight which requires some manual handling.

I delivered to a shit hole grocery warehouse and they didnt even have any lumpers to hire.